Backend Administrator

We are looking for a technically capable Backend Administrator to support and operate our Virtual Office Management Platform for UK clients. The role combines CRM administration, VoIP and virtual number provisioning, callhandling workflows, billing operations and integrations, with a strong focus on UK regulatory and data protection requirements (GDPR, Ofcom where applicable).

Key Responsibilities

• CRM Administration — Configure, maintain and optimise CRM systems; manage user roles and permissions; ensure data integrity and produce management reports.
• VoIP and Virtual Number Management — Provision and manage DIDs, call trunks and routing; configure call forwarding, queues and voicemail; liaise with VoIP providers and PBX systems (e.g., FreeSWITCH/Asterisk).
• Call Handling and Contact Centre Support — Implement secretary-to-employee transfer flows, queue management and call logging; maintain call records and performance reports.
• Integrations and Backend Services — Build and maintain API integrations between CRM, telephony and calendar systems (e.g., Google Calendar); support Node.js microservices, REST APIs and realtime messaging.
• Billing and Usage Tracking — Track usage per client, support automated invoicing and payment gateway integrations; manage prepaid/postpaid balances and lowbalance alerts.
• Monitoring, Support and Compliance — Monitor system health and call quality; respond to incidents and perform root cause analysis; maintain documentation, runbooks and compliance records for GDPR and UK telecom regulations.
• Stakeholder Coordination — Work closely with client contacts, secretaries, account managers and thirdparty vendors to deliver timely provisioning and issue resolution.

Person Specification and Skills

• Essential
• Minimum 2 years' experience in backend/platform administration with CRM and VoIP exposure.
• Practical experience with CRM platforms (Salesforce, Zoho, HubSpot or equivalent).
• Handson knowledge of VoIP platforms and virtual number provisioning; familiarity with FreeSWITCH or Asterisk.
• Experience with Node.js backends, REST APIs, PostgreSQL and Redis.
• Familiarity with Docker and cloud hosting (AWS or Google Cloud).
• Strong troubleshooting, scripting and automation skills.
• Clear communicator with good stakeholder management skills.
• Desirable
• Experience integrating telephony with CRM via APIs.
• Knowledge of billing systems and payment gateway integration.
• Understanding of GDPR, Ofcom guidance and UK data security best practice.
• Experience with Firebase or other realtime notification services.

Skills Required
Docker, Google Cloud, Rest Apis, crm administration , Call Handling, Redis, Node.js, Aws, Postgresql